From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-00641c01.pphosted.com (mx0a-00641c01.pphosted.com [205.220.165.146]) by sourceware.org (Postfix) with ESMTPS id 6185E3857345; Fri, 13 Oct 2023 21:22:03 +0000 (GMT) ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 6185E3857345 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=205.220.165.146 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1697232124; cv=none; b=jWmDfzGcpibP+HCm2Gn8OMzTpEffWieuKJDONrBujFUhhK55A3ar8VjpJOIeLQ0+u4P4RHNn/cn4+fahhiHj1var5PpCEq89GTAV2Z+iw8qnBsCGxUdCcClkQ5fs6I75UbqVqeYlFV7KSDhrUbOjBEa+GRKeGmwTffZ0w/WG4Eo= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1697232124; c=relaxed/simple; bh=Nz7P73GKgdaoysk+y3xwS5zNXk6vIepk6igOSMNcwIA=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=t3CEarGUxrqTJZPD+Ri3tyVvZU5PfSuDUYZBkxIff8vDyrCHejA12gSiOx6tj9CeWTihsOk72lICtlr8gkRFlhiXSGoWo4S26TeQcn3pdpki8xoB4ct/y5x+365tXYGwHcoFPf8mK8TWCEheHLTmXywvQ2JvGFxy9Gjh12+rSsA= ARC-Authentication-Results: i=1; server2.sourceware.org DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 6185E3857345 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=gcc.gnu.org Authentication-Results: sourceware.org; spf=fail smtp.mailfrom=gcc.gnu.org Received: from pps.filterd (m0247473.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 39DLESeE011301; Fri, 13 Oct 2023 21:22:02 GMT Received: from mxout23.cac.washington.edu (mxout23.cac.washington.edu [140.142.32.140]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3tqbgdhcv7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 13 Oct 2023 21:22:02 +0000 Received: from smtp.washington.edu (smtp.washington.edu [140.142.234.157]) by mxout23.cac.washington.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 39DLLhGO014731 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 13 Oct 2023 14:21:44 -0700 X-Auth-Received: from kmatsui-ThinkPad-X1-Carbon-Gen-9.dhcp4.washington.edu ([10.19.18.191]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW19.10) with ESMTPSA id 39DLC9cI009146 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 13 Oct 2023 14:21:43 -0700 X-UW-Orig-Sender: kmatsui@smtp.washington.edu From: Ken Matsui To: gcc-patches@gcc.gnu.org Cc: libstdc++@gcc.gnu.org, Ken Matsui Subject: [PATCH v18 15/40] libstdc++: Optimize is_scoped_enum trait performance Date: Fri, 13 Oct 2023 14:04:11 -0700 Message-ID: <20231013211206.1215663-16-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231013211206.1215663-1-kmatsui@gcc.gnu.org> References: <20231011215049.1052142-1-kmatsui@gcc.gnu.org> <20231013211206.1215663-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: V22cfvfoN2ykWPsth_46PfkCaw6Z3REq X-Proofpoint-ORIG-GUID: V22cfvfoN2ykWPsth_46PfkCaw6Z3REq X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.980,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-10-13_12,2023-10-12_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1034 malwarescore=0 bulkscore=0 spamscore=0 suspectscore=0 mlxlogscore=768 lowpriorityscore=0 mlxscore=0 priorityscore=1501 adultscore=0 impostorscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2310130185 X-Spam-Status: No, score=-13.2 required=5.0 tests=BAYES_00,GIT_PATCH_0,JMQ_SPF_NEUTRAL,KAM_DMARC_STATUS,RCVD_IN_DNSWL_LOW,SPF_HELO_NONE,SPF_NEUTRAL,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: This patch optimizes the performance of the is_scoped_enum trait by dispatching to the new __is_scoped_enum built-in trait. libstdc++-v3/ChangeLog: * include/std/type_traits (is_scoped_enum): Use __is_scoped_enum built-in trait. (is_scoped_enum_v): Likewise. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index d306073a797..7fd29d8d9f2 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -3633,6 +3633,12 @@ template /// True if the type is a scoped enumeration type. /// @since C++23 +# if _GLIBCXX_USE_BUILTIN_TRAIT(__is_scoped_enum) + template + struct is_scoped_enum + : bool_constant<__is_scoped_enum(_Tp)> + { }; +# else template struct is_scoped_enum : false_type @@ -3644,11 +3650,17 @@ template struct is_scoped_enum<_Tp> : bool_constant { }; +# endif /// @ingroup variable_templates /// @since C++23 +# if _GLIBCXX_USE_BUILTIN_TRAIT(__is_scoped_enum) + template + inline constexpr bool is_scoped_enum_v = __is_scoped_enum(_Tp); +# else template inline constexpr bool is_scoped_enum_v = is_scoped_enum<_Tp>::value; +# endif #endif #ifdef __cpp_lib_reference_from_temporary // C++ >= 23 && ref_{converts,constructs}_from_temp -- 2.42.0